@Vaibhav, print syllabus of both the exams. Make a list of similar topics and start with that. Later on you may cover the remaining topics. Do this strictly with proper planning, else you may pile up some of these topics when exams would be on your head !

@Reshma, you should refer the UPSC CS exam syllabus (Pre and Mains) and then collect maximum books (70-90 in total). Plan your studies by taking one subject at a time. First complete the preparation of Mains and then Prelims.

Hello Sir,
You website is very informative for UPSC/MPSC aspirant.
I want to apply for UPSC exam, I have completed my Graduation and working in a call center.
Am I eligible for this exam? I am 24 years Old.
And Is the job guaranteed if you clear this exam?.
I have started to read books and magazines for general knowledge purpose and doing more research on the optional subjects.
Need you guidance for this exam.
Thank You.

@Ajit, do this: write 500 words on the 2G Spectrum scam in your own language (in Marathi as well as English). If you are comfortable in English then go for it else Marathi. In UPSC exam, you have to write the answers in your own language and in most of the answers, you have to give your opinion.